Reverse osmosis apparatus

Details Reverse osmosis apparatus Reverse osmosis apparatus

B - Operations, Transporting

01

D

182/13

B01D 13/00 (1985.01)

Patent

CA 1219222

"REVERSE OSMOSIS APPARATUS" ABSTRACT A reverse osmosis module in which the semipermeable mem- brane comprising a microporous support reinforced on one side thereof with a backing material and the other side thereof having deposited thereon an ultra-thin film formed by cross-linking polyethyleneimine with a cross-linking agent such as isophthaloyl chloride and the back- ing for the membrane sandwich comprising a film of a polyethylene- terephthalate positioned between two layers of an epoxy-impregnated polyester may be utilized to concentrate or dewater aqueous solutions at elevated temperatures and pressures. The module may be used at temperatures ranging from about 50° to about 95°C and pressures ranging from 400 to about 1200 psi to dewater aqueous sugar solutions, salt solutions, starch solutions, etc.

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